George Romero has made a 5th episode for Ultimate Doom. This was expanded a long time ago with the fourth episode, Thy Flesh Consumed, and now we have a 5th episode, named Sigil. This is loaded with Doom, and adds a 5th episode to the 4 already in Ultimate Doom. This is very good too. Challenging and up to date. Now that we have 3d map editors with undo, it is easier than ever to make a good map. The first Doom maps were made on a Next Step machine, now we have 1080p screens and powerful GPU chips, so we can use Gzdoom Builder and create a masterpiece easily.
The maps are somewhat tight, and harder than the older Doom maps, but this is 2019, and players are very skilled these days. using str50 to run very fast is a very good tip to use in these maps. They are way too hard for keyboard players. But the episode 3 motif is used extensively in these maps, they look stunning, this is a very nice addon for such an old game. Maps such as E5M7 are quite hard, and feel more like Episode 4 maps. This episode is very good for any Doom fan. There are deathmatch maps in this as well. When playing the normal maps in DM mode, the players will spawn on the deathmatch sections instead. Apparently, in one level, it is possible to break through to the single player section.
SIGIL speedrun in Ultraviolence.
SIGIL megawad website: https://www.romerogames.ie/si6il.